.arrow {
    border-top: 15px solid transparent;
    border-bottom: 15px solid transparent;
}

.arrow-right {
    border-left: 15px solid #000;
}

.arrow-left {
    border-right: 15px solid #000;
}

#inks {
    height: 25em;
}

select {
    width: 100%;
    font-size: large;
}
